Scheme for adaptive control of transport layer connection in communications via radio and wire networks

Abstract

A communication scheme for improving the performance of communications utilizing the transport layer connection provided via a radio network, by enabling a control of the transport layer connection according to the radio communication state and property of the radio terminal, without changing implementation of the transport layer of a terminal connected to a wire network. The gateway device is provided with a control unit for controlling a connection in the radio transport layer protocol according an information regarding a radio communication state of the radio terminal device, where the information regarding the radio communication state of the radio terminal device is notified from either a radio base station device covering a radio service area in which the radio terminal device is located or a home location register for carrying out at least registration and management of the radio terminal device.

1. A radio terminal device accommodated in a radio network, the radio terminal device comprising:
 an acquisition unit for acquiring an information which indicates that communications with the radio base station will be interrupted; and 
 a disconnection unit for disconnecting a transport layer connection with a radio base station, when communications with the radio base station are not resumed within a prescribed period of time after receiving the information. 
 
   
   
     2. The radio terminal device of  claim 1 , wherein the disconnection unit also disconnects a connection used by a correspondent terminal when a packet comes from the correspondent terminal that was carrying out communication using the transport layer connection after the transport layer connection is disconnected. 
   
   
     3. A radio terminal device accommodated in a radio network, the radio terminal device comprising:
 an acquisition unit for acquiring an information which indicates that communications with the radio terminal device will be resumed; 
 a re-transmission timer for indicating a timing for a packet to be re-transmitted; and 
 a unit for resetting the re-transmission timer and immediately re-transmitting said packet to be re-transmitted, upon receiving the information.